spacer
An empty region that reserves area on the page and draws nothing at all.
Special
This element renders nothing visible on its own.
When to reach for it
The nearest alternative is a rect with no fill; spacer is the honest choice when nothing should ever be drawn, since it has no visual properties to set by accident.
Worth knowing
A band is an absolutely positioned mini-canvas, so a spacer does not push neighbouring elements down — it marks empty area rather than creating it.
Open the Component Tour → to see this element alongside all the others.